GitHub user pravingadakh opened a pull request:
https://github.com/apache/spark/pull/9522
[SPARK-11535][ML] handling empty string in StringIndexer
Replacing "" (not null) with string "EMPTY_STRING" in StringIndexer.
Another approach is to use "0" (or next available integer), but it may have
performance issues when input column has integer values say (0 to 100000). We
can use another string to replace "" values if "EMPTY_STRING" is commonly used.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/pravingadakh/spark SPARK-11535
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/9522.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #9522
----
commit 66eba8e322e170e6570900cbf0b2802947d95781
Author: Pravin Gadakh <[email protected]>
Date: 2015-11-06T11:35:48Z
handling empty string in StringIndexer
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
